EP3306701B1 - Batteriemodul mit struktur mit direkt verbundenen anschlussplatten und bms - Google Patents

Batteriemodul mit struktur mit direkt verbundenen anschlussplatten und bms Download PDF

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Publication number
EP3306701B1
EP3306701B1 EP16827953.7A EP16827953A EP3306701B1 EP 3306701 B1 EP3306701 B1 EP 3306701B1 EP 16827953 A EP16827953 A EP 16827953A EP 3306701 B1 EP3306701 B1 EP 3306701B1
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EP
European Patent Office
Prior art keywords
battery
bms
cell
terminal plates
battery cells
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16827953.7A
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English (en)
French (fr)
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EP3306701A4 (de
EP3306701A1 (de
Inventor
Seung Min Yang
Hyoung Chul Yoon
Chang Wook Park
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LG Energy Solution Ltd
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LG Energy Solution Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a battery module having structure in which a battery management system is directly connected to terminal plates.
  • a secondary battery which can be repeatedly charged and discharged, has been widely used as an energy source for wireless mobile devices.
  • the secondary battery has attracted considerable attention as an energy source for electric vehicles and hybrid electric vehicles, which have been developed to solve problems, such as air pollution, caused by existing gasoline and diesel vehicles that use fossil fuels.
  • problems such as air pollution, caused by existing gasoline and diesel vehicles that use fossil fuels.
  • kinds of applications using the secondary battery are being increased owing to advantages of the secondary battery, and hereafter the secondary battery is expected to be applied to more applications and products than now.
  • the secondary battery may be classified as a lithium ion battery, a lithium ion polymer battery, or a lithium polymer battery.
  • the lithium ion polymer battery has been increasingly used because the lithium ion polymer battery has a low possibility of electrolyte leakage and can be easily manufactured.
  • the secondary battery may also be classified as a cylindrical battery having an electrode assembly mounted in a cylindrical metal can, a prismatic battery having an electrode assembly mounted in a prismatic metal can, or a pouch-shaped battery having an electrode assembly mounted in a pouch-shaped case made of an aluminum laminate sheet.
  • the secondary battery is being widely used as an energy source for diverse electronic products as well as various kinds of mobile devices.
  • various kinds of combustible materials are contained in the secondary battery.
  • the lithium secondary battery may overheat or explode due to the overcharge of the secondary battery, the overcurrent in the secondary battery, or other external physical impact applied to the secondary battery.
  • the secondary battery is provided with a safety system, such as a protection circuit for interrupting electric current when the secondary battery is overcharged or overdischarged or when overcurrent flows in the secondary battery, a positive temperature coefficient (PTC) element whose resistance greatly increases so as to interrupt electric current when the temperature of the secondary battery increases, or a safety vent for interrupting electric current or exhausting gas when pressure increases due to generation of the gas.
  • a safety system such as a fuse, a bimetal, or a battery management system (BMS), for protecting battery cells from overcharge, overdischarge, or overcurrent.
  • Voltage sensing terminals are connected to the BMS, which is one of the above-described safety systems, via wires so as to detect voltages of battery cells or unit modules.
  • FIG. 1 is a typical view showing a conventional battery module having a structure in which a BMS is connected to voltage sensing terminals via wires.
  • a battery module 10 is configured to have a structure in which a plurality of battery cells 11 is arranged in the state in which the battery cells 11 are adjacent to each other laterally, frames 12 are mounted to opposite ends of the battery cells 11, and a BMS 13 is located at the upper side of one end of the battery cells 11.
  • the BMS 13 is connected to voltage sensing terminals 14 via wires 15.
  • the battery cells 11 are connected to each other in series. It is required for the BMS 13 to monitor voltages of the respective battery cells 11. For this reason, it is necessary for the number of voltage sensing terminals 14 to be equal to the number of battery cells. In addition, it is necessary for the number of wires 15 to be equal to the number of battery cells. In this structure, the voltage sensing terminals 14 and the wires 15 are manually soldered, with the result that the manufacturing process is complicated, and the wires are arranged complicatedly, whereby the structure of the battery module becomes complicated.
  • JP2009/064919 , JP2014/127418 , US2008/213652 , JP2010/277795 disclose battery packs and insights of their inner connections.
  • a battery module according to the set of claims having structure in which a battery management system is directly connected to battery cells without using wires in order to solve various problems, such as the deterioration of the aesthetic appearance of the battery module, the increase in cost of manufacturing the battery module, and the non-uniformity in process of manufacturing the battery module, which may occur when a plurality of voltage sensing terminals and a plurality of wires are soldered so as to be connected to the battery cells.
  • the present invention is defined by the present independent claim 1.
  • a battery module including a battery cell stack configured to have a structure in which a plurality of battery cells is arranged such that the battery cells are adjacent to each other laterally, a pair of cell frames mounted to opposite ends of the battery cell stack, terminal plates for electrically connecting electrode terminals of the battery cells to each other, and a battery management system (BMS) mounted to one side surface of the battery cell stack in the state in which the BMS is directly connected to the terminal plates.
  • BMS battery management system
  • the BMS is directly connected to the terminal plates without using wires, thereby solving various problems, such as the deterioration of the aesthetic appearance of the battery module, the increase in cost of manufacturing the battery module, and the non-uniformity in process of manufacturing the battery module, which may occur when the terminal plates are connected to the BMS by soldering.
  • each of the battery cells may be a cylindrical battery cell.
  • the cylindrical battery cell may be configured to have a structure in which a positive electrode sheet, a negative electrode sheet, and a separator sheet interposed between the positive electrode sheet and the negative electrode sheet are wound to form a jelly-roll type electrode assembly, the electrode assembly is received in a cylindrical metal container together with an electrolyte, and a cap assembly is mounted to the upper end of the cylindrical container.
  • the battery cell stack may be configured to have a structure in which the size of the battery cell stack in the horizontal direction is greater than the size of the battery cell stack in the vertical direction.
  • the "vertical direction” means the height direction from the ground
  • the “horizontal direction” means the direction perpendicular to the direction in which the electrode terminals of the battery cells are formed.
  • the battery cell stack may be configured to have a structure in which the size of the battery cell stack in the vertical direction is greater than the size of the battery cell stack in the horizontal direction. It is possible to change the shape of each of the terminal plates, which electrically connect the electrode terminals of the battery cells to each other, based on the structure of the battery cell stack.
  • the cell frames include a first cell frame to which one end of the battery cell stack is mounted and a second cell frame to which the other end of the battery cell stack is mounted, and the first cell frame and the second cell frame are coupled to each other using a fastening member.
  • the first cell frame and the second cell frame may be provided in corners thereof with fastening holes, through which fastening members may be inserted so as to couple the first cell frame and the second cell frame to each other.
  • the first cell frame and the second cell frame are provided in insides thereof with receiving parts, each of which corresponds to one end or the other end of a corresponding one of the battery cells, and openings, through which the electrode terminals of the battery cells are exposed, are formed in outer surfaces of the first cell frame and the second cell frame.
  • each of the battery cells may be a cylindrical battery cell, and therefore each of the receiving parts may be provided with a cylindrical recess.
  • Each of the openings may be formed so as to have a circular shape corresponding to the shape of a corresponding one of the receiving parts.
  • through channels through which a coolant flows, may be defined between the receiving parts of the first cell frame and the second cell frame, and each of the terminal plates may be provided with a through hole, which is aligned with a corresponding one of the through channels in the cell frames. Consequently, the through channels may communicate with the through holes.
  • the coolant, introduced through the through holes of the terminal plates located on one side of the battery module may pass through the through channels of the first cell frame and the through channels of the second cell frame, and may be discharged through the through holes of the terminal plates located on the other side of the battery module, whereby the battery cells may be cooled.
  • the coolant may be introduced and discharged in the opposite direction.
  • the terminal plates are mounted to the outer surfaces of the cell frames in the state in which the terminal plates are connected to the electrode terminals of the battery cells.
  • the terminal plates may be connected to the electrode terminals of the battery cells by soldering such that the terminal plates are mounted to the outer surfaces of the cell frames.
  • hooks may be formed on the cell frames such that the hooks protrude outward from the cell frames, and fastening recesses corresponding to the hooks may be formed in the terminal plates.
  • the terminal plates may be mounted to the cell frames by inserting the hooks into the fastening recesses.
  • the terminal plates may connect two or more battery cells to each other in series or in series and in parallel.
  • the battery cells may be connected to each other so as to have a 2P-13S structure.
  • each of the terminal plates includes a terminal connection part configured to contact a corresponding one of the electrode terminals of the battery cells, the terminal connection part being formed to have a rectangular shape, and a BMS connection part extending from one side of the terminal connection part, the BMS connection part being connected to the BMS in the state in which the BMS connection part is bent perpendicularly from the upper end of a corresponding one of the cell frames toward the BMS.
  • the shape of the terminal connection part based on the structure in which the battery cells are connected to each other. Specifically, when the number of battery cells connected to each other in parallel is increased, the contact area between the terminal plates and the electrode terminals of the battery cells may be increased.
  • the cell frames may be provided in the upper ends thereof with recesses, having a shape corresponding to the BMS connection parts, for guiding bending of the BMS connection parts and fixing the BMS connection parts.
  • recesses having a shape corresponding to the BMS connection parts, for guiding bending of the BMS connection parts and fixing the BMS connection parts.
  • slits for allowing the terminal connection parts to be welded to the electrode terminals of the battery cells may be formed in the portions of the terminal connection parts corresponding to the electrode terminals of the battery cells. The slits make it easy to connect the terminal connection parts to the electrode terminals of the battery cells by soldering or welding.
  • the BMS includes a printed circuit board (PCB) mounted to the upper surface of the battery cell stack, the PCB being configured to have a rectangular shape corresponding to the horizontal size of the battery cell stack, an integrated circuit (IC) formed on the PCB, the IC being electrically connected to voltage sensing connection parts for measuring voltages of the battery cells to control the operation of the battery module, and the voltage sensing connection parts arranged along the outer edge of the PCB at intervals so as to be connected to the terminal plates.
  • PCB printed circuit board
  • IC integrated circuit
  • each of the voltage sensing connection parts may be configured to have a rectangular shape when viewed from above. More specifically, each of the voltage sensing connection parts may be configured to have a structure in which the length of the voltage sensing connection part in the horizontal direction is greater than the length of voltage sensing connection part in the width direction.
  • the "width direction” means the longitudinal direction of each of the battery cells.
  • each of the voltage sensing connection parts includes a first contact part configured to contact a corresponding one of the terminal plates and a second contact part electrically connected to the IC in the state in which the second contact part is electrically disconnected from the first contact part, and the first contact part and the second contact part are soldered to a corresponding one of the terminal plates such that the terminal plate is electrically connected to the IC.
  • each of the voltage sensing connection parts include a first contact part and a second contact part, which are disconnected from each other, and the first contact part and the second contact part are connected to corresponding one of the terminal plates by soldering, thereby preventing damage to the IC due to unintentional contact between the voltage sensing connection parts and the terminal plates.
  • a battery pack including the battery module.
  • a device including the battery pack as a power source.
  • the device may be any one selected from the group consisting of an electric bicycle, an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and a power storage apparatus.
  • FIG. 2 is an exploded view typically showing a battery module according to an embodiment of the present invention
  • FIG. 3 is an enlarged view typically showing a terminal plate of the battery module of FIG. 2
  • FIG. 4 is an enlarged view typically showing a battery management system (BMS) of the battery module of FIG. 2 .
  • BMS battery management system
  • a battery module 100 includes a battery cell stack 110, a first cell frame 120, a second cell frame 130, terminal plates 140, and a BMS 150.
  • the battery cell stack 110 is configured to have a structure in which cylindrical battery cells 111 are stacked and arranged such that the battery cells 111 are adjacent to each other laterally.
  • the battery cell stack 110 is configured to have a structure in which the horizontal size of the battery cell stack 110 is greater than the vertical size of the battery cell stack 110.
  • the battery cells 111 are arranged in the state in which electrode terminals of the battery cells 111 are opposite each other such that the battery cells 111 has a 2P-13S structure.
  • the first cell frame 120 and the second cell frame 130 are mounted to opposite ends of the battery cell stack 110.
  • the first cell frame 120 and the second cell frame 130 may be coupled to each other using a fastening member (not shown).
  • the first cell frame 120 and the second cell frame 130 are provided in insides thereof with cylindrical receiving parts 121 and 131, each of which corresponds to one end or the other end of a corresponding one of the battery cells 111.
  • openings 122, through which electrode terminals of the battery cells 111 are exposed, are formed in the outer surfaces of the first cell frame 120 and the second cell frame 130.
  • the BMS 150 is located on the upper end surface of the battery cell stack 110.
  • the terminal plates 140 are mounted to the outer surfaces of the first cell frame 120 and the second cell frame 130 in the state in which the terminal plates 140 are connected to the electrode terminals of the battery cells 111.
  • through channels 124 and 134 through which a coolant may flow, are defined between the receiving parts 121 and 131 of the first cell frame 120 and the second cell frame 130.
  • Each of the terminal plates 140 are provided with a through hole 149, which is aligned with a corresponding one of the through channels 124 and 134.
  • the through channels 124 and 134 communicate with the through holes 149.
  • Each of the terminal plates 140 includes a terminal connection part 141 and a BMS connection part 142.
  • the terminal connection part 141 contacts a corresponding one of the electrode terminals of the battery cells 111.
  • the terminal connection part 141 is formed to have a rectangular shape.
  • the BMS connection part 142 extends from the upper side of the terminal connection part 141.
  • the BMS connection parts 142 are bent perpendicularly from the upper ends of the cell frames 120 and 130 toward the BMS 150.
  • the cell frames 120 and 130 are provided in the upper ends thereof with recesses 129 and 139, which have a shape corresponding to the BMS connection parts 142, for guiding the bending of the BMS connection parts 142 and fixing the BMS connection parts 142.
  • Slits 143 for allowing the terminal connection parts 141 to be easily soldered or welded to the electrode terminals of the battery cells 111 are formed in the portions of the terminal connection parts 141 corresponding to the electrode terminals of the battery cells 111.
  • the BMS 150 includes a printed circuit board (PCB) 151, an integrated circuit (IC) 152, and voltage sensing connection parts 153.
  • PCB printed circuit board
  • IC integrated circuit
  • the PCB 151 is mounted to the upper surface of the battery cell stack 110.
  • the PCB 151 is configured to have a rectangular shape corresponding to the horizontal size of the battery cell stack 111.
  • the IC 152 is formed on the PCB 151.
  • the IC 152 is electrically connected to the voltage sensing connection parts 153 for measuring voltages of the battery cells 111 to control the operation of the battery module.
  • the voltage sensing connection parts 153 are arranged along the outer edge of the PCB 151 at intervals so as to be connected to the terminal plates 140.
  • FIG. 5 is an enlarged plan view showing one of the voltage sensing connection parts of the battery module of FIG. 2 .
  • the voltage sensing connection part 153 includes a first contact part 154 and a second contact part 155.
  • the first contact part 154 is configured to contact each of the terminal plates 140, and the second contact part 155 is electrically connected to the IC 152 in the state in which the second contact part 155 is electrically disconnected from the first contact part 154.
  • the first contact part 154 and the second contact part 155 are soldered to each of the terminal plates 140 such that the terminal plate 140 is electrically connected to the IC 152.
  • a battery module according to the present invention includes a battery management system (BMS) directly connected to terminal plates without using wires, thereby solving various problems, such as the deterioration of the aesthetic appearance of the battery module, the increase in cost of manufacturing the battery module, and the non-uniformity in process of manufacturing the battery module, which may occur when the terminal plates are connected to the BMS by soldering.
  • BMS battery management system

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Claims (9)

  1. Batteriemodul (10, 100), umfassend:
    einen Batteriezellenstapel (110), welcher dazu eingerichtet ist, eine Struktur aufzuweisen, in welcher eine Mehrzahl von Batteriezellen (11, 111) derart angeordnet ist, dass die Batteriezellen (11, 111) einander lateral benachbart sind;
    ein Paar von Zellenrahmen (120, 130), welche an entgegengesetzten Enden des Batteriezellenstapels (110) montiert sind;
    Anschlussplatten (140) zum elektrischen Verbinden von Elektrodenanschlüssen der Batteriezellen (111) miteinander; und
    ein Batterieverwaltungssystem (BMS, 150), welches an einer Seitenfläche des Batteriezellenstapels (110) in einem Zustand montiert ist, in welchem das BMS (150) ohne Verwendung von Leitungen direkt mit den Anschlussplatten (140) verbunden ist, wobei die Enden des Stapels (110) von der Seite des Stapels (110) verschieden sind, an welcher Fläche das BMS (150) montiert ist; wobei das BMS (150) umfasst:
    eine Leiterplatte (PCB, 151), welche an einer oberen Fläche des Batteriezellenstapels (110) montiert ist, wobei die PCB (151) derart eingerichtet ist, dass sie eine rechteckige Form aufweist, welche einer horizontalen Abmessung des Batteriezellenstapels (110) entspricht;
    eine integrierte Schaltung (IC, 152), welche auf der PCB (151) gebildet ist, wobei die IC (152) mit Spannungserfassung-Verbindungsteilen (153) zum Messen von Spannungen der Batteriezellen (11, 111) elektrisch verbunden ist, um einen Betrieb des Batteriemoduls (10, 100) zu steuern; und
    die Spannungserfassung-Verbindungsteile (153) entlang eines äußeren Randes der PCB (151) in Intervallen angeordnet sind, um mit den Anschlussplatten (140) verbunden zu sein;
    wobei die horizontale Richtung die Richtung ist, welche senkrecht zu der Richtung ist, in welcher die Elektrodenanschlüsse der Batteriezellen gebildet sind,
    wobei
    - jedes der Spannungserfassung-Verbindungsteile (153) umfasst: einen ersten Kontaktteil (154), welcher dazu eingerichtet ist, eine entsprechende der Anschlussplatten (140) zu kontaktieren; und einen zweiten Kontaktteil (155), welcher elektrisch mit der IC (152) verbunden ist, wobei der erste und der zweite Kontaktteil (155) an eine entsprechende der Anschlussplatten (140) gelötet sind, so dass die Anschlussplatte elektrisch mit der IC (152) verbunden ist,
    wodurch die PCB (151) des BMS (150) eine Konfiguration aufweist, welche durch Bereitstellen des zweiten Kontaktteils (155), welcher mit der IC (152) elektrisch verbunden ist, in einem Zustand vor dem Löten sowohl des ersten als auch des zweiten Teils an die Anschlussplatte, wobei der zweite Kontaktteil (155) elektrisch von dem ersten Kontaktteil (154) getrennt ist, erhaltbar ist,
    und wobei die Zellenrahmen (120, 130) einen ersten Zellenrahmen (120), an welchem ein Ende des Batteriezellenstapels (110) montiert ist, und einen zweiten Zellenrahmen (130) umfasst, an welchem das andere Ende des Batteriezellenstapels (110) montiert ist, und der erste Zellenrahmen (120) und der zweite Zellenrahmen (130) unter Verwendung eines Befestigungselements miteinander gekoppelt sind,
    und wobei der erste Zellenrahmen (120) und der zweite Zellenrahmen (130) in Innenseiten davon mit Aufnahmeteilen (121, 131) bereitgestellt sind, von welchen jedes einem Ende oder dem anderen Ende einer entsprechenden der Batteriezellen (111) entspricht, und Öffnungen (122), durch welche die Elektrodenanschlüsse der Batteriezellen freigelegt sind, in äußeren Flächen des ersten Zellenrahmens (120) und des zweiten Zellenrahmens (130) gebildet sind,
    und wobei die Anschlussplatten (140) an äußeren Flächen der Zellenrahmen (120, 130) in einem Zustand montiert sind, in welchem die Anschlussplatten (140) mit den Elektrodenanschlüssen der Batteriezellen verbunden sind, und
    wobei jede der Anschlussplatten (140) umfasst:
    einen Anschlussverbindungsteil (141), welcher dazu eingerichtet ist, einen entsprechenden der Elektrodenanschlüsse der Batteriezellen (111) zu kontaktieren,
    wobei der Anschlussverbindungsteil (141) derart gebildet ist, dass er eine rechteckige Form aufweist; und
    einen BMS-Verbindungsteil (142), welcher sich von einer Seite des Anschlussverbindungsteils (141) erstreckt, wobei der BMS-Verbindungsteil (142) mit dem BMS (150) in einem Zustand verbunden ist, in welchem der BMS-Verbindungsteil (142) senkrecht von einem oberen Ende eines entsprechenden der Zellenrahmen (120, 130) in Richtung des BMS (150) gebogen ist.
  2. Batteriemodul (10, 100) nach Anspruch 1, wobei der Batteriezellenstapel (110) dazu eingerichtet ist, eine Struktur aufzuweisen, in welcher eine horizontale Abmessung des Batteriezellenstapels (110) größer als eine vertikale Abmessung des Batteriezellenstapels (110) ist.
  3. Batteriemodul (10, 100) nach Anspruch 1, wobei Durchgangskanäle, durch welche ein Kühlmittel strömt, zwischen den Aufnahmeteilen des ersten Zellenrahmens (120) und des zweiten Zellenrahmens (130) definiert sind.
  4. Batteriemodul (10, 100) nach Anspruch 3, wobei jede der Anschlussplatten (140) mit einem Durchgangsloch (149) bereitgestellt ist, welches mit einem entsprechenden der Durchgangskanäle (124, 134) in den Zellenrahmen (120, 130) ausgerichtet ist.
  5. Batteriemodul (10, 100) nach Anspruch 1, wobei die Zellenrahmen (120, 130) in den oberen Enden davon mit Aussparungen (129, 139) bereitgestellt sind, welche eine Form aufweisen, welche den BMS-Verbindungsteilen (142) entspricht, um ein Biegen der BMS-Verbindungsteile (142) zu führen und die BMS-Verbindungsteile (142) zu fixieren.
  6. Batteriemodul nach Anspruch 1, wobei Schlitze (143), um dem Anschlussverbindungsteil (141) zu erlauben, an die Elektrodenanschlüsse der Batteriezellen geschweißt zu werden, in Abschnitten der Anschlussverbindungsteile bereitgestellt sind, welche den Elektrodenanschlüssen der Batteriezellen entsprechen.
  7. Batteriemodul (10, 100) nach Anspruch 1, wobei jeder der Spannungserfassung-Verbindungsteile (153) dazu eingerichtet ist, eine rechteckige Form aufzuweisen, wenn von oben betrachtet.
  8. Batteriepack, umfassend ein Batteriemodul (10, 100) nach Anspruch 1.
  9. Vorrichtung, umfassend einen Batteriepack nach Anspruch 8, wobei die Vorrichtung ein Elektrofahrrad, ein Elektrofahrzeug, ein Hybrid-Elektrofahrzeug oder ein Plug-In-Hybrid-Elektrofahrzeug ist.
EP16827953.7A 2015-07-21 2016-07-05 Batteriemodul mit struktur mit direkt verbundenen anschlussplatten und bms Active EP3306701B1 (de)

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PCT/KR2016/007220 WO2017014449A1 (ko) 2015-07-21 2016-07-05 단자 플레이트 및 bms가 직접 연결된 구조의 전지모듈

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US10608292B2 (en) 2020-03-31
EP3306701A4 (de) 2018-07-25
CN107851749B (zh) 2020-10-27
ES2945710T3 (es) 2023-07-06
CN107851749A (zh) 2018-03-27
WO2017014449A1 (ko) 2017-01-26
JP2018519651A (ja) 2018-07-19
US20170133723A1 (en) 2017-05-11
EP3306701A1 (de) 2018-04-11
HUE061659T2 (hu) 2023-07-28
PL3306701T3 (pl) 2023-08-07
KR20170011001A (ko) 2017-02-02
JP6789580B2 (ja) 2020-11-25

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